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(No Model.) E* L PUPKB LOCK FOB. FIRE ARMS.

No. 409,704. Patented Aug. 27, 1889.

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UNITED STATES PATENT OFFICE.

EBERI-IARD L. PUPKE, OF NEN YORK, N. Y.

LOCK FOR FIRE-ARMS.

SPECIFICATION forming part of Letters Patent No. 409,704, dated August27', 1889. Application filed December 19, 1888. Serial No. 294,093.(No/model.)

To all whom, it may concern:

'Be it known that I, EBERHARD L. PUPKE, acitizen of the United States,residing at New York, in the county of New York and State of New York,have invented certain new and useful Improvements in Fire-Arms; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to certain new and useful improvements in triggermechanisms for doublebarreled fire-arms, and has for its object toprovide a simple and effective device whereby the hammers of adouble-barreled gun may be sprung alternately by the manipulation of asingle trigger.

With these ends in View my invention consists in the detailsofconstruction and combination of elements, such as will be hereinafterfully set forth, and then specifically designated by the claims.

In the accompanying drawings, Figure l is a sectional elevation of agun-breech, showing the relative position of my improved triggermechanism to the sears; Fig. 2, a section at the line .fr 0c of Fig. l,and Fig. 3 a plan View of the sears and trigger mechanism.

Similar letters denote like parts in the several figures.

In the present instance I have shown my improvement in connection with ahammerless gun; but it equally applicable to guns using exposed hammers,and, furthermore, I have not deemed it necessary to show the mechanismfor cocking the hammers, as this is ordinary and well'known.

A represents the breech of a gun, inclosing the hammers B, which operatein the usual manner, and O O are the sears, of ordinary construction,which serve to retain the hammers in their cocked position.

The above-named elements form no part of my invention, since the latterhas to do solely with the trigger mechanism.

D is the trigger, pivoted at its upper end between ears E, formed withthe breech, and provided with a rearwardly-extending proj ection F. Thisextension is slotted, so as to receive and form a bearing for thestar-wheel G, which latter is composed of eight points a b, the fourpoints a being in one vertical plane, while the remaining four points bare in another vertical plane, the points in one plane alternating withthose in the other, for the purpose presently explained.

H is a spring-pawl secured to the breech and adapted to engage thepoints of the starwheel in such manner as to rotate the latter one stepfor every up-and-down movement thereof caused by the actuation of thetrigger.

I is a spring-actuated retaining-pawl pivoted within the slot formed inthe extension, and adapted to so engage the points of the star-wheel asto prevent any retrograde movement of the latter.

Now, as the tails de of the sears C C extend just within the circledescribed by the points of the star-wheel, it will be seen that on the'upward movement of said Wheel the sear whose tail is in the verticalplane of the inner horizontal point will be disengaged from the hammer,thereby permitting the latter to be sprung. As the `star-wheel iselevated by the pulling of the trigger, the pawl II engages anew point,so that when the trigger is released and the wheel descends said wheelwill be caused to rotate one step, thus bringing to a horizontalposition the next succeeding point, which, being in a different verticalplane from its predecessor, will upon a second operation of the triggeractuate the reverse scar, and so on, first one and then the other hammerbeing sprung. For example, if the trigger be operated while the innerpoint of the a, series is in a horizontal position, as shown, said pointwill engage and elevate the tail d of the scar O, which is in the samevertical plane therewith. Now as the wheel falls upon the release of thetrigger, the pawl H, having engaged a point in the b series, will bringsaid point to a horizontal position, and upon the next operation of thetrigger this latter point will engage and elevate the tail e of the searC. Thus the hammers will be sprung alternately by the simple operationot the single trigger.

Vhen my improvement is used in connection with hammerless guns, it isdesirable to be able to readily ascertain which of the hammers has beensprung. I accomplish this as follows:

IOO

Within recesses formed in the upper 4wall of the breech (onlyone beingshown) are secured springs h, terminating in pins i, which projectthrough openings, as shown. Z is a notch cut in the upper portion ofeach hammer, the Walls of which notch are adapted to cam against thelower ends of the pins and elevate the latter against the resiliency oftheir springs when the hammers are cocked. When a hammer is sprung, itsspring recedes Within the notch, so that at a glance it may beascertained which of the hammers has been sprung.

I claim- 1. In a double-barreled gun, the trigger carrying thestar-wheel, as described,in combination with a stationary pawl securedto the lock-casingwithin theield of movement of said wheel, whereby,when the trigger is operated, said wheel will be carried against saidpawl,

thereby rotating'v the wheel, the sears against which said wheeloperates when elevated, and a detent-pawl carried by the trigger andengaging with said wheel, whereby the latter is prevented from revolvingbackward, substantially as shown, and for the purposes set forth.

2. The combination of a trigger, carrying a star-wheel wh ose alternatepoints are in different Vertical planes and are operated to rotate stepby step by the springing of said trigger, with the sears of adouble-barreled gun, said sears having tails within the operative iieldof said wheel, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in the presence of twowitnesses.

EBERIIARD L. PUPKE. Witnesses:

EDWARD E. BRUNER, WM. W. NILEs, Jr.

